diff --git a/server.js b/server.js
index a618e4a..1b85be1 100644
--- a/server.js
+++ b/server.js
@@ -71,7 +71,9 @@ app.post('/api/chat', (req, res) => {
         res.end();
     });
 
-    req.on('close', () => { try { proc.kill(); } catch (e) {} });
+    let finished = false;
+    proc.on('close', () => { finished = true; });
+    res.on('close', () => { if (!finished) try { proc.kill(); } catch (e) {} });
 });
 
 app.listen(8108, () => console.log('sechenov :8108'));